3 Results

3.3 Circumference of penis after sexual stimulus: grouped by response

Figure 5 shows the distribution of penile circumferences grouped by response (in mm circumference change, n=152). Table 5 shows the frequency distribution for subjects with a circumference change of more than 10 mm (n=74). For this group the mean circumference was 122 mm (standard deviation 16 mm, range 90 - 161 mm, median 121 mm). Twenty-five percent of these subjects obtained a penile circumference of less than 110 mm, seventy-five percent obtained a penile circumference of less than 131 mm, and ninety percent obtained a penile circumference of less than 142 mm.

Figure 5. Distribution of circumferences (mm) of the erect penis, grouped by penile response (N= 152).

Table 5. Frequency distribution of penile circumference after sexual stimulus, subjects
with circumference change > 10 mm only (N=74)